using System;
using System.Collections.Generic;
using System.IO;
using Antlr4.Runtime;

public abstract class Dart2LexerBase : Lexer
{
    protected Dart2LexerBase(ICharStream input)
        : base(input)
    {
    }

    public Dart2LexerBase(ICharStream input, TextWriter output, TextWriter errorOutput)
        : base(input, output, errorOutput) { }

    protected bool CheckNotOpenBrace()
    {
        return this.InputStream.LA(1) != '{';
    }
}
